About Lupinus obtusilobus A.Heller
Lupinus obtusilobus A.Heller is a species of lupine that has two common names: bluntlobe lupine and satin lupine. It is native to the high mountains of northern California, where it occurs in the North Coast Ranges, the Klamath Mountains, and the northernmost Sierra Nevada. This plant grows in a variety of mountain habitat types, and sometimes carpets meadows with its purple blooms in spring. It is a perennial herb that grows either erect or decumbent along the ground, with stems reaching 15 to 30 centimetres (5.9 to 11.8 inches) long. Each palmate leaf is made up of 6 to 7 leaflets that grow up to 5 centimetres (2.0 inches) long. The above-ground herbage of the plant is covered in silvery, silky hairs. Its inflorescence is a small raceme that holds a few whorls of flowers; each flower is just over a centimeter long. Flowers are blue to purple, with a yellowish patch on their banner. The fruit is a legume pod covered in silky hairs that grows up to 4 centimetres (1.6 inches) long.